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	 f4b8bf8f07
			
		
	
	
		f4b8bf8f07
		
			
		
	
	
	
	
		
			
			* first pass at convert cosmos coin -> evm msg * test ConvertCosmosCoinFromERC20 method * test message server for MsgConvertCosmosCoinFromERC20 * update spec to include MsgConvertCosmosCoinFromERC20 * update changelog * add CLI command for convert-cosmos-coin-from-erc20 * add test of removed/re-enable denom for convert
		
			
				
	
	
		
			190 lines
		
	
	
		
			4.8 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			190 lines
		
	
	
		
			4.8 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
| package keeper
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| 
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| import (
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| 	"context"
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| 	"fmt"
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| 
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| 	sdk "github.com/cosmos/cosmos-sdk/types"
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| 
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| 	"github.com/kava-labs/kava/x/evmutil/types"
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| )
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| 
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| type msgServer struct {
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| 	keeper Keeper
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| }
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| 
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| // NewMsgServerImpl returns an implementation of the evmutil MsgServer interface
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| // for the provided Keeper.
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| func NewMsgServerImpl(keeper Keeper) types.MsgServer {
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| 	return &msgServer{keeper: keeper}
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| }
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| 
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| var _ types.MsgServer = msgServer{}
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| 
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| ////////////////////////////
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| // EVM-native assets -> Cosmos SDK
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| ////////////////////////////
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| 
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| // ConvertCoinToERC20 handles a MsgConvertCoinToERC20 message to convert
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| // sdk.Coin to Kava EVM tokens.
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| func (s msgServer) ConvertCoinToERC20(
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| 	goCtx context.Context,
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| 	msg *types.MsgConvertCoinToERC20,
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| ) (*types.MsgConvertCoinToERC20Response, error) {
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| 	ctx := sdk.UnwrapSDKContext(goCtx)
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| 
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| 	initiator, err := sdk.AccAddressFromBech32(msg.Initiator)
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| 	if err != nil {
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| 		return nil, fmt.Errorf("invalid Initiator address: %w", err)
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| 	}
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| 
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| 	receiver, err := types.NewInternalEVMAddressFromString(msg.Receiver)
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| 	if err != nil {
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| 		return nil, fmt.Errorf("invalid Receiver address: %w", err)
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| 	}
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| 
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| 	if err := s.keeper.ConvertCoinToERC20(
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| 		ctx,
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| 		initiator,
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| 		receiver,
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| 		*msg.Amount,
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| 	); err != nil {
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| 		return nil, err
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| 	}
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| 
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| 	ctx.EventManager().EmitEvent(
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| 		sdk.NewEvent(
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| 			sdk.EventTypeMessage,
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| 			sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
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| 			sdk.NewAttribute(sdk.AttributeKeySender, msg.Initiator),
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| 		),
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| 	)
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| 
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| 	return &types.MsgConvertCoinToERC20Response{}, nil
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| }
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| 
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| // ConvertERC20ToCoin handles a MsgConvertERC20ToCoin message to convert
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| // sdk.Coin to Kava EVM tokens.
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| func (s msgServer) ConvertERC20ToCoin(
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| 	goCtx context.Context,
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| 	msg *types.MsgConvertERC20ToCoin,
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| ) (*types.MsgConvertERC20ToCoinResponse, error) {
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| 	ctx := sdk.UnwrapSDKContext(goCtx)
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| 
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| 	initiator, err := types.NewInternalEVMAddressFromString(msg.Initiator)
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| 	if err != nil {
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| 		return nil, fmt.Errorf("invalid initiator address: %w", err)
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| 	}
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| 
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| 	receiver, err := sdk.AccAddressFromBech32(msg.Receiver)
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| 	if err != nil {
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| 		return nil, fmt.Errorf("invalid receiver address: %w", err)
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| 	}
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| 
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| 	contractAddr, err := types.NewInternalEVMAddressFromString(msg.KavaERC20Address)
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| 	if err != nil {
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| 		return nil, fmt.Errorf("invalid contract address: %w", err)
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| 	}
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| 
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| 	if err := s.keeper.ConvertERC20ToCoin(
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| 		ctx,
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| 		initiator,
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| 		receiver,
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| 		contractAddr,
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| 		msg.Amount,
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| 	); err != nil {
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| 		return nil, err
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| 	}
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| 
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| 	ctx.EventManager().EmitEvent(
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| 		sdk.NewEvent(
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| 			sdk.EventTypeMessage,
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| 			sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
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| 			sdk.NewAttribute(sdk.AttributeKeySender, msg.Initiator),
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| 		),
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| 	)
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| 
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| 	return &types.MsgConvertERC20ToCoinResponse{}, nil
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| }
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| 
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| ////////////////////////////
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| // Cosmos SDK-native assets -> EVM
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| ////////////////////////////
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| 
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| // ConvertCosmosCoinToERC20 converts a native sdk.Coin to an ERC20.
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| // If no ERC20 contract has been deployed for the given denom, a new
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| // contract will be deployed and registered to the module.
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| func (s msgServer) ConvertCosmosCoinToERC20(
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| 	goCtx context.Context,
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| 	msg *types.MsgConvertCosmosCoinToERC20,
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| ) (*types.MsgConvertCosmosCoinToERC20Response, error) {
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| 	ctx := sdk.UnwrapSDKContext(goCtx)
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| 
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| 	initiator, err := sdk.AccAddressFromBech32(msg.Initiator)
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| 	if err != nil {
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| 		return nil, fmt.Errorf("invalid initiator address: %w", err)
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| 	}
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| 
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| 	receiver, err := types.NewInternalEVMAddressFromString(msg.Receiver)
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| 	if err != nil {
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| 		return nil, fmt.Errorf("invalid receiver address: %w", err)
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| 	}
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| 
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| 	if err := s.keeper.ConvertCosmosCoinToERC20(
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| 		ctx,
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| 		initiator,
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| 		receiver,
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| 		*msg.Amount,
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| 	); err != nil {
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| 		return nil, err
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| 	}
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| 
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| 	ctx.EventManager().EmitEvent(
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| 		sdk.NewEvent(
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| 			sdk.EventTypeMessage,
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| 			sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
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| 			sdk.NewAttribute(sdk.AttributeKeySender, msg.Initiator),
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| 		),
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| 	)
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| 
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| 	return &types.MsgConvertCosmosCoinToERC20Response{}, nil
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| }
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| 
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| // ConvertCosmosCoinFromERC20 converts an ERC20 representation of a cosmos-native asset
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| // back into an sdk.Coin.
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| func (s msgServer) ConvertCosmosCoinFromERC20(
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| 	goCtx context.Context,
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| 	msg *types.MsgConvertCosmosCoinFromERC20,
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| ) (*types.MsgConvertCosmosCoinFromERC20Response, error) {
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| 	ctx := sdk.UnwrapSDKContext(goCtx)
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| 
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| 	initiator, err := types.NewInternalEVMAddressFromString(msg.Initiator)
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| 	if err != nil {
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| 		return nil, fmt.Errorf("invalid initiator address: %w", err)
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| 	}
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| 
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| 	receiver, err := sdk.AccAddressFromBech32(msg.Receiver)
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| 	if err != nil {
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| 		return nil, fmt.Errorf("invalid receiver address: %w", err)
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| 	}
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| 
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| 	if err := s.keeper.ConvertCosmosCoinFromERC20(
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| 		ctx,
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| 		initiator,
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| 		receiver,
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| 		*msg.Amount,
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| 	); err != nil {
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| 		return nil, err
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| 	}
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| 
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| 	ctx.EventManager().EmitEvent(
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| 		sdk.NewEvent(
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| 			sdk.EventTypeMessage,
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| 			sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
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| 			sdk.NewAttribute(sdk.AttributeKeySender, msg.Initiator),
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| 		),
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| 	)
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| 
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| 	return &types.MsgConvertCosmosCoinFromERC20Response{}, nil
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| }
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